Download a file via HTML5 Blob API: Failed to get remote object proxy about macgap2 HOT 2 OPEN

- (void)webView:(WebView *)webView decidePolicyForNavigationAction:(NSDictionary *)actionInformation
        request:(NSURLRequest *)request
        frame:(WebFrame *)frame
        decisionListener:(id<WebPolicyDecisionListener>)listener
{
    if (WebNavigationTypeLinkClicked == [[actionInformation objectForKey:WebActionNavigationTypeKey] intValue])
    {
        NSLog(@"CLICKED %@", [request URL]);
    }
    [listener use]; // Say for webview to do it work...
}

NSLog(@"CLICKED %@", [request URL]);
        NSString *needle = @"blob:";
        if( [[[request URL] absoluteString] hasPrefix:needle] ) {
            // create a download link from blob url
            NSRange blobRange = [[[request URL] absoluteString] rangeOfString:needle];
            NSString * blobURL = [[[request URL] absoluteString] substringFromIndex:blobRange.location + needle.length];
            NSURLRequest *downloadURLRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:blobURL]];
            NSLog(@"BLOB URL:%@", [[downloadURLRequest URL] absoluteString]);
            NSURLSessionDownloadTask *downloadTask = [[NSURLSession sharedSession] downloadTaskWithRequest:downloadURLRequest
                                                                                         completionHandler:^(NSURL *location, __unused NSURLResponse *response, NSError *error) {
                if (location) {
                    
                    // get download folders
                    NSArray *docDirs = NSSearchPathForDirectoriesInDomains(NSDownloadsDirectory,
                                                                           NSUserDomainMask, YES);
                    NSString *destinationFilename = [docDirs objectAtIndex:0];
                    if (destinationFilename) {
                        destinationFilename = [destinationFilename stringByAppendingPathComponent:@"out.json"];
                        NSLog(@"LOCATION %@ DOWNLOAD %@", [location absoluteString], destinationFilename);
                        NSFileManager *fileManager = [NSFileManager defaultManager];
                        NSError *anError = nil;
                        NSString *fromPath = [location path];
                        if ([fileManager fileExistsAtPath:destinationFilename])
                            [fileManager removeItemAtPath:destinationFilename error:&anError];
                        BOOL fileCopied = [fileManager moveItemAtPath:fromPath toPath:destinationFilename error:&anError];
                        if (fileCopied == NO) {
                        
                        } else {
                            NSLog(@"Downloaded!");
                        }
                    }
                } else {
                    NSLog(@"Error:%@", [error description]);
                }
            }];
            [downloadTask resume];
            return;
        }